Table 4 Spatiotemporal clusters obtained by Bernoulli scan statistic model on FMD outbreaks in cattle farms in Chiang Mai and Lamphun, Thailand 2015–2016
Cluster number | Cluster type | Cluster time | Centroid(X,Y)/Radius (km) | Number of cases | Number of expected cases | Observed to expected cases | Relative risk | Log likelihood ratio | p-value |
|---|---|---|---|---|---|---|---|---|---|
2015 | |||||||||
1 | Most likely | 1 May-27 Aug | 18.855897 N, 99.021103 E/22.75 | 472 | 166.64 | 2.83 | 3.63 | 435.41 | < 0.001 |
2 | Secondary | 28 Aug-15 Oct | 18.630732 N, 99.282214 E/3.09 | 283 | 90.38 | 3.13 | 3.61 | 323.63 | < 0.001 |
3 | Secondary | 28 Aug-12 Nov | 18.715834 N, 99.214166 E/2.85 | 133 | 41.74 | 3.19 | 3.39 | 158.20 | < 0.001 |
2016 | |||||||||
1 | Most likely | 10 July-12 Nov | 18.920082 N, 99.112156 E/25.63 | 1777 | 826.26 | 2.15 | 4.12 | 806.39 | < 0.001 |
2 | Secondary | 31 Jan-27 Feb | 18.641755 N, 99.290282 E/0.75 | 149 | 19.38 | 7.69 | 8.06 | 307.38 | < 0.001 |
3 | Secondary | 5 Ju-6 Aug | 18.610597 N, 99.026988 E/11.52 | 137 | 19.12 | 7.16 | 7.48 | 247.16 | < 0.001 |
4 | Secondary | 28 Aug-8 Oct | 18.513051 N, 98.870263 E/0.66 | 85 | 11.06 | 7.69 | 7.89 | 174.48 | < 0.001 |